Polyproplyene Film Metal Foil Capacitor

Polyproplyene Film Metal Foil Capacitor PC06 series are inductively wound with polypropylene film as the dielectric and aluminum foil as the electrode...
Author: Neal Harrison
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Polyproplyene Film Metal Foil Capacitor PC06 series are inductively wound with polypropylene film as the dielectric and aluminum foil as the electrode with copper-clad steel leads and epoxy resin coating

Features * Excellent frequency and temperature characteristics * High insulation resistance, high capacitance stability * Suitable for timing circuit and oscillation circuit * Small size, light weight

Specifications * Reference Standard: GB10188 (IEC60384-13) * Operation Temperature Range: -40℃ to +85℃ (40/85/21) * Rating Voltage: 100V, 200VDC * Capacitance Range: 0.001 - 0.1uF * Capacitance Tolerance: 5%(J), 10%(K) * Voltage Proof: 2.0 Ur (5s) * Dissipation Factor: ≦0.001 Max AT 1KHZ & +20℃ * Insulation Resistance: ≧50000MΩ +20℃±5℃, 10V FOR 1 min

DIMENSIONS (uF)

100VDC

200VDC

W

H

T

D

P

W

H

T

D

P

0.001

7.0

12.00

4.5

0.5

3.5

7.5

12.5

5.0

0.5

5.0

0.0015

7.0

12.0

4.5

0.5

3.5

7.5

12.5

5.0

0.5

5.0

0.0018

7.5

12.0

4.5

0.5

3.5

7.5

12.5

5.0

0.5

5.0

0.0022

7.5

12.0

4.5

0.5

3.5

7.5

12.5

5.0

0.5

5.0

0.0027

7.5

12.0

5.0

0.5

3.5

7.5

12.5

5.5

0.5

5.0

0.0033

7.5

12.0

5.0

0.5

3.5

7.5

12.5

5.5

0.5

5.0

0.0047

7.5

12.0

5.0

0.5

4.0

8.0

12.5

5.5

0.5

5.0

0.0056

8.0

12.0

5.0

0.5

4.0

8.0

12.5

5.5

0.5

5.0

0.0068

8.0

12.0

5.0

0.5

4.0

8.0

12.5

5.5

0.5

5.0

0.0082

8.0

12.0

5.0

0.5

4.5

8.0

12.5

5.5

0.5

5.0

0.01

8.0

12.0

5.0

0.5

4.5

8.5

12.5

5.5

0.5

5.0

0.015

8.5

12.0

5.5

0.5

4.5

9.5

14.5

6.0

0.5

7.0

0.022

9.0

12.5

6.0

0.5

5.0

10.5

15.0

6.0

0.5

7.0

0.027

9.5

13.0

6.0

0.5

5.0

11.0

15.0

6.5

0.5

7.5

0.033

9.5

14.0

6.5

0.5

5.5

12.0

15.5

7.0

0.5

7.5

0.039

10.0

14.0

6.5

0.5

5.5

0.047

10.5

14.0

7.0

0.5

6.0

0.056

11.5

14.0

7.0

0.5

7.0

0.068

12.0

16.0

8.0

0.5

7.0

0.082

12.5

16.0

8.0

0.5

8.0

0.1

13.5

16.0

9.0

0.5

8.5

-

-

-

-

-

Poly-tech Precision Industry Ltd

http://www.polytrade.com.hk page: 1 of 5

email: [email protected]

Technology Reference: 1. Operating Voltage: 1.1 Rated voltage and operating voltage In general application, operating voltage of film capacitor will not be allowed to over the rated voltage. If used beyond the rating, it may induce insulation breakdown of the film and cause short circuit. In a metallized capacitor which has a self-healing action, short circuit or other failure may not occur immediately after application of a voltage, but the insulation resistance is lowered, and it may lead to smoke or fire depending on the circuit. If a capacitor of DC rating is used in an AC circuit, the maximun operating voltage is limited by heator electric discharged. The maximum operating voltage converted to AC varies with each type, for detail or refer to the table below: AC maximum working voltage (50/60Hz) DC rated voltage 50V 63V 100V 200V 250V 400V 630V 1250V

Metallized polyester Film Capacitor 32VAC 40VAC 63VAC 100VAC 125VAC 200VAC 250VAC 500VAC

Metallized Polyproplyene Film Capacitor 63VAC 100VAC 125VAC 200VAC 250VAC 500VAC

1.2 Operating temperature and operating voltage In film capacitors, the usable upper limit temperature (the capacitor surface temperature) is determined by the type of dielectric. When used beyond the rated upper limit temperature (usable upper limit temperature), it is necessary to voltage derate the in certain types (models), while other types (models) cannot be used limit temperature, and therefore when using beyond the rated upper limit temperature. Rated upper limit temperature, usable upper limit temperature, and derating of usable upper limit temperature by types in DC use. Dielectric Polyester Polyproplyene Polyester Polyproplyene Polyester / Polyproplyene PPS

Rated upper limit temperature 85 85 85 70 85

℃ ℃ ℃ ℃ ℃ 85℃

Usable upper limit temperature 105 85 105 70 85

℃ ℃ ℃ ℃ ℃ 85℃

Usable upper limit voltage rated voltage x 75% rated voltage x 50% rated voltage x 75% rated voltage x 50% rated voltage rated voltage

Note 1: * Upper limit temperature usable continuously at DC rated voltage, include a capacitor own temperature rise value * Usable upper limit temperature continuously by derating of DC rated voltage including a capacitor own temperature rise value * Usable upper limit temperature: Upper limit voltage usable continuously by upper limit temperature Note 2: * When using at high frequency, however the capacitor has its own temperature rise and hence the derating ratio cannot be applied. And also, the ambient temperature and the self-temperature rise should be both taken into account. If the capacitor is subject to rms or pulse currents higher than those admitted, make sure the operating temperature (ambient temperature plus self temperature rise) will not exceed the rated upper temperature.

Poly-tech Precision Industry Ltd

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Capacitor Type Polyester / Metallized polyester film capacitor

Allowable self temperature rise within 10

℃ within 5℃

Polyproplyene / Metallized polypolyproplyene film capacitor

1.3 Rated voltage and capacitance value Generally, iun film capacitors, as the capacitance value is increased, the withstand voltage performance is decreased. In the case of capacitance range exceeding 0.1uF of polyproplyene capacitor, use within the following voltage. Cap.value (uF) 0.11 ~ 0.12 0.13 ~ 0.15 0.16 ~ 0.18 0.20 ~ 0.22 0.24 ~ 0.27 0.30 ~ 0.33 0.36 ~ 0.39 0.43 ~ 0.47

50VDC 49V 47V 46V 45V 44V 42V 41V 40V

Rated voltage 100VDC 200VDC 400VDC 630VDC 98V 195V 390V 615V 95V 190V 380V 600V 93V 185V 370V 585V 90V 180V 360V 570V 88V 175V 350V 85V 170V 340V 83V 165V 320V 80V 160V 300V -

1.4 Rated voltage and frequency When using at high frequency, the dissipation factory (tan δ) increases, there is a risk of thermal runway (smoke or fire) due to self heat generation in the capacitor. Derate the rated voltage according to the example below: * derating example of rated voltage - capacitor used: PC16 (0.22uf 250Vdc) operating frequency: 30KHz (sine wave) permissible current (entry value by specification): 30KHz, 2.7A rms usable upper limit voltage: 60HZ 150V rms; 30KHz 65V rms V=

I 2 π fc

=

2.7 2 x 3.14 x 30 x 103 x 0.22 x 10-6

=

65Vrms

Therefore, the rated voltage at sine wave 30KHz is lowered to 65V rms (derating ratio 57%), as compared with AC rated voltage of 150V rms at commercial frequency. Notes: * use the peak value (Vo-p) of the pulse voltage applied to both ends of the capacitor within the DC rating. * When using at high frequency, measure the self heating temperature rise value of the capacitor, sure it is within the specified limit. * protective means for safety should be required in case a voltage over the rated voltage (permissible voltage) may be applied to the capacitor due to abnormal action such as trouble elsewhere in the circuit.

2. Permissible current Film capacitors are low in internal impedance, and hence a very large current may flow depending on the circuit. In particular, when turning power swir\tch in and off, make sure a very high pulse current may flow. When a current exceeding the permissible range flows into capacitor, it can caused the capacitances value to deteriorate or an circuit, temperature rise occurs due to self heating generation, this withand voltage and result in short circuit, possibly leading to smoke or fire. The permissible current must be considered by dividing into pulse (peak current) and continuous current (rms) depending on the breakdown mode, and when using, therefore, make sure the both currents are within the permissible values.

Poly-tech Precision Industry Ltd

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2.1 Permissible current and operating frequency The film capacitor varies in the frequency characteristic of dissipation factor ( tanδ) depending on the dielectric materials, and hence the permission rms cuirrent for same operating frequency differs depending in the capacitor type. In particular, when operating at high frequency, the dissipation factory(tan δ) increase, and when using over the permissible current, it may thermal runway, possibly leading to smoke or firm. 2.2 Permissible current and pulse current The pulse permissible current is obtained by the product of dv/dt (V/µs) valuethat is entering to the specification and capacitance (uF), I = C x dv/dt. The dv/dt (V/µs) value of a film capacitor is determined by the element structure. The dv/dt value of the inductively film capacitor is mainly determined by the lead spacing (element width) and element sectional area In the metallized type, in particular, the internal evaporated electrode and external take out electrode are connected by metallized contact (metal spraying), and hence due caution is needed because the upper limit dv/dt value is low. 3. Operating temperature 3.1 Own temperature When the film capacitor is used in an AC circuit, especially in high frequency application, the capacitor generates heat by itself from the flowing current. If the self heat generation is large, the capacitor may deteriorated, and smoke or fire may be occur. Check the self heating temperature rise value in actual conditions of use, and use within the limit specified. When measuring the own temperaturerise value in indoor and windfree condition, the capacitor being tested must be supplied by the working AC or pulse voltage and frequency. 3.2 Operating temperture The operating temperature range of film capacitor varies with the dielectric material (type of film), and the usable temeprature range is specified in each model. It must be noted, however, that the temperature range mentioned in the catalogue is the surface temperature of the film capacitor, not the ambient temperature of the capacitor. In actual use, make sure the sum of the ambient temperature + capacitors self heating temperature rise value (within specified value), that is, the capacitor surface temperature is within the rated operating temperature range. Caution: When used above the rated operating temperature range, dissipation factor (tanδ) increases, and the self heat generation may exceed the permissible value, possibly causing deterioration of dielectric film, short circuit, fire or smoke. If there is cooling plate of other part or any resistance heated to high temperature near the film capacitor, it may be locally heated, exceeding the operating temperature range, smoke or fire may be caused. (check the capacitor surface temperature at the heat source side) 4. Other cautions 4.1 Charging and discharged Because the charging and discharging current of capacitor is obtain by the product of voltage rise rate (dv/dt) and capacitance, low voltage charging and discharging may also cause deterioration of capacitor such as shorting and open due to sudden charging and discharging current. When charged and discharging pass though a resistance of 20Ω/V to 1000Ω/V or more to limit current. When connecting multiple film capacitor in parallel in withstand voltage test or life test, connect a resistance of 20Ω/V to 1000Ω/V or more in series to each capacitor. 4.2 Flame retardation Although flame retardation epoxy resin or plastic case is used in the coating or encapsulating of plastic fim capacitor, continuous outer high temperature or firing will break the coating layer or plastic case of the capacitor, and may lead melting and firing of the capacitor element.

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4.3 Environments of use * When used for a long period in humid environments, the elements absorb moisture through the coating with the passing of the time. Water is low in insulation resistance, and oxidized the electrode (evaporated film and metallized contact) and leads to trouble. * When using in an oxidizing gas such as hydrogen chloride, hydrogen sulfide and sulfrous acid, the evaporated film or metallized contact (zinc compound) may result in smoke or fire, avoid such atmosphere. 4.4 Cautions for mounting The heat resisting temperature of the film capacitor varies with the type of electric film, structure of the capacitor, manufacturing method, etc. when mounting, set the mounting temperature so that the capacitor inside (element) temperature will be lower than the mounting heat resisting temperature given below: Dielectric Polyproplyene Polyester PPS

Poly-tech Precision Industry Ltd

Mounting heat resisting temperature 110

℃ 160℃ 170℃

http://www.polytrade.com.hk page: 5 of 5

email: [email protected]

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